Chapter 3--TEST Parallel lines and angles in polygons

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet; they are always the same distance apart.

Front

What are same-side interior angles?

Back

Same-side interior angles are pairs of angles that lie on the same side of a transversal and between the two lines.

Front

What are alternate interior angles?

Back

Alternate interior angles are pairs of angles that lie on opposite sides of a transversal and between the two lines.

Front

What is the sum of the interior angles of a polygon with n sides?

Back

The sum of the interior angles of a polygon with n sides is given by the formula (n-2) × 180°.

Front

What are supplementary angles?

Back

Supplementary angles are two angles whose measures add up to 180°.

Front

How do you find the measure of an angle when given its supplementary angle?

Back

To find the measure of an angle when given its supplementary angle, subtract the measure of the supplementary angle from 180°.

Front

What is a transversal?

Back

A transversal is a line that intersects two or more lines in a plane at different points.

Front

What is the relationship between corresponding angles when two parallel lines are cut by a transversal?

Back

Corresponding angles are equal when two parallel lines are cut by a transversal.

Front

What is the measure of each interior angle of a regular polygon with 8 sides?

Back

Each interior angle of a regular octagon (8 sides) measures 135°.

Front

What is the exterior angle of a polygon?

Back

An exterior angle of a polygon is formed by one side of the polygon and the extension of an adjacent side.